Method and machine for electrical resistance roll seam welding with a single electrode-wire

US4536636A · kind A · utility

Assignee

• Paul Opprecht · CH

Inventors

• Paul Opprecht · Bergdietikon, CH
• Wolfgang Weil · Heitersheim, DE
• Martin Kaul · Spreitenbach, CH

Key dates

• Filing date: Jan 25, 1984
• Grant date: Aug 20, 1985
• Expiry date: Jan 25, 2004

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B23K11/3045
• WIPO field: Machine tools
• WIPO sector: Mechanical engineering

Abstract

In a method for electrical resistance roll seam welding with a single electrode-wire, wherein the electrode-wire runs over first and second electrode carrier-rolls urged against each other, and the strength of the electrode-wire is increased by rolling-out before it enters the first electrode carrier-roll, elongations of the electrode-wire which can otherwise arise and lead to a slippage of the electrode-wire at the welding point and therefore, deleteriously affect the weld-quality can be largely prevented by reducing the electrode-wire temperature at the welding-point by cooling with a cooling device (17) the electrode-wire (12) between its rolling-out point (17/18) and its passage onto the first electrode carrier-roll (14) and/or between its departure from electrode carrier-roll (14) and its passage onto the second electrode carrier-roll (15).